系统感染长叶车前花叶病毒的青菜叶片叶柄分别作冰冻切片，运用免疫酶标技术对叶片叶柄内的病毒进行显色定位。
Chinese cabbage leaf blade and leaf stalk of Brassica Chinensis systematically infected with Ribgrass Mosaic virus was separately made by the freezing cut transection.
对白菜丝核菌叶腐病标样进行了鉴定及生物学特性研究。
The results showed that the pathogen of Chinese cabbage Rhizoctonia leaf rot was Rhizoctonia solani.
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